As more connected cars hit the road, wireless spectrum becomes a battleground

Cellular carriers, cable companies, and the automobile industry are fighting for exclusive use of the 5.9 GHz unlicensed spectrum currently reserved for ITS.

Over the past 20 years, countries leading technological innovation, such as the US, European Union, China, and Japan, have agreed to reserve a part of the 5.9 GHz frequency band for the use of intelligent transport services (ITS). The technologies using that spectrum are known as Dedicated Short Range Communication (DSRC) systems.

DSRC services on the 5.9 GHz band, especially using the IEEE 802.11p standard are in operation in many cities and regions for traffic signals, emergency vehicle signal priority, intersection collision avoidance, electronic parking payments, toll collection, and other transit services.

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